which letter to the editor is more formal?\nim writing because im fed up about our library not staying open…

which letter to the editor is more formal?\nim writing because im fed up about our library not staying open like it used to.\ni am writing to express my dissatisfaction with the librarys reduced hours.
Answer
Brief Explanations:
Formal writing uses more precise, less colloquial language. The first letter uses "I'm" (contraction) and "fed up" (colloquial phrase), while the second uses "I am" (full form) and "dissatisfaction" (formal term) with a clear, professional tone. So the second letter is more formal.
Answer:
The letter: "I am writing to express my dissatisfaction with the library’s reduced hours."